Il 27/08/2019 09:34, Bertorello, Marco ha scritto: > Buongiorno lista, > > ho un dubbio relativo a ZFS. > > # zdb -DD zp1 > > DDT-sha256-zap-duplicate: 144703 entries, size 349 on disk, 200 in core > DDT-sha256-zap-unique: 1176516 entries, size 306 on disk, 159 in core > > DDT histogram (aggregated over all DDTs): > > bucket allocated referenced > ______ ______________________________ ______________________________ > refcnt blocks LSIZE PSIZE DSIZE blocks LSIZE PSIZE DSIZE > ------ ------ ----- ----- ----- ------ ----- ----- ----- > 1 1.12M 38.1G 23.0G 23.0G 1.12M 38.1G 23.0G 23.0G > 2 87.8K 1.96G 1.05G 1.05G 197K 4.21G 2.26G 2.26G > 4 39.7K 1.41G 729M 729M 199K 7.04G 3.53G 3.53G > 8 13.2K 261M 132M 132M 131K 2.29G 1.17G 1.17G > 16 493 3.05M 1.14M 1.14M 10.4K 65.5M 24.5M 24.5M > 32 107 800K 271K 271K 4.38K 33.6M 11.8M 11.8M > 64 51 374K 112K 112K 4.62K 36.5M 11.3M 11.3M > 128 9 163K 5.50K 5.50K 1.48K 24.2M 916K 916K > 256 9 42K 4.50K 4.50K 3.13K 16.0M 1.57M 1.57M > 512 2 1K 1K 1K 1.11K 566K 566K 566K > 1K 1 8K 512B 512B 1.28K 10.3M 656K 656K > 16K 1 8K 512B 512B 20.3K 163M 10.2M 10.2M > Total 1.26M 41.7G 24.9G 24.9G 1.68M 51.9G 30.0G 30.0G > ^^^^^ ^^^^^ > dedup = 1.21, compress = 1.73, copies = 1.00, dedup * compress / copies = 2.09 > > # zpool list > > NAME SIZE ALLOC FREE EXPANDSZ FRAG CAP DEDUP HEALTH ALTROOT > zp1 99.5G 31.7G 67.8G - 39% 31% 1.20x ONLINE - > ^^^^^ > > # df -h > > Filesystem Size Used Avail Use% Mounted on > udev 3.4G 0 3.4G 0% /dev > tmpfs 697M 916K 696M 1% /run > /dev/mapper/localhost--vg-root 112G 104G 6.5G 95% / > tmpfs 3.5G 0 3.5G 0% /dev/shm > tmpfs 5.0M 0 5.0M 0% /run/lock > tmpfs 3.5G 0 3.5G 0% /sys/fs/cgroup > /dev/sda1 236M 46M 178M 21% /boot > zp1 65G 0 65G 0% /zp1 > zp1/backup 65G 0 65G 0% /zp1/backup > zp1/backup/subvol-109-disk-0 67G 2.3G 65G 4% /zp1/backup/subvol-109-disk-0 > tmpfs 697M 0 697M 0% /run/user/0 > zp1/backup/subvol-110-disk-0 75G 11G 65G 14% /zp1/backup/subvol-110-disk-0 > zp1/backup/subvol-111-disk-0 66G 1.4G 65G 3% /zp1/backup/subvol-111-disk-0 > zp1/backup/subvol-105-disk-0 67G 1.9G 65G 3% /zp1/backup/subvol-105-disk-0 > zp1/backup/subvol-106-disk-0 68G 2.7G 65G 4% /zp1/backup/subvol-106-disk-0 > zp1/backup/subvol-100-disk-0 66G 551M 65G 1% /zp1/backup/subvol-100-disk-0 > zp1/backup/subvol-114-disk-0 66G 794M 65G 2% /zp1/backup/subvol-114-disk-0 > zp1/backup/subvol-103-disk-0 66G 1.4G 65G 2% /zp1/backup/subvol-103-disk-0 > zp1/backup/subvol-101-disk-0 66G 943M 65G 2% /zp1/backup/subvol-101-disk-0 > zp1/backup/subvol-107-disk-0 66G 1.2G 65G 2% /zp1/backup/subvol-107-disk-0 > zp1/backup/subvol-112-disk-0 66G 643M 65G 1% /zp1/backup/subvol-112-disk-0 > zp1/backup/subvol-113-disk-0 71G 6.3G 65G 9% /zp1/backup/subvol-113-disk-0 > zp1/backup/subvol-104-disk-0 66G 1.3G 65G 2% /zp1/backup/subvol-104-disk-0 > > Il dubbio è: quanto spazio sto effettivamente utilizzando? > > 41.7 GB dovrebbe essere lo spazio effettivamente utilizzato al netto della deduplica, a fronte di 51.9 GB di dati. > > Ma allora perchè zpool list mi dice di averne allocati solo 31.7 GB? > > Inoltre, perchè df non mi fa vedere lo spazio occupato da zp1 e/o zp1/backup, ma solo dai sottovolumi montati? > Per esempio, ci sono almeno altri 2 sottovolumi, non montati, con i relativi snapshots, che occupano spazio. > > zp1 è un file da 100 GB (purtroppo essendo una vps non potevo fare diversamente). > Sono attive sia deduplica che compressione. > > Grazie mille per le delucidazioni Ho dimenticato zfs list: # zfs list NAME USED AVAIL REFER MOUNTPOINT zp1 36.8G 64.6G 24K /zp1 zp1/backup 36.2G 64.6G 32K /zp1/backup zp1/backup/subvol-100-disk-0 553M 64.6G 551M /zp1/backup/subvol-100-disk-0 zp1/backup/subvol-101-disk-0 951M 64.6G 943M /zp1/backup/subvol-101-disk-0 zp1/backup/subvol-103-disk-0 1.48G 64.6G 1.31G /zp1/backup/subvol-103-disk-0 zp1/backup/subvol-104-disk-0 1.22G 64.6G 1.22G /zp1/backup/subvol-104-disk-0 zp1/backup/subvol-105-disk-0 1.84G 64.6G 1.83G /zp1/backup/subvol-105-disk-0 zp1/backup/subvol-106-disk-0 2.79G 64.6G 2.67G /zp1/backup/subvol-106-disk-0 zp1/backup/subvol-107-disk-0 1.15G 64.6G 1.14G /zp1/backup/subvol-107-disk-0 zp1/backup/subvol-109-disk-0 2.30G 64.6G 2.23G /zp1/backup/subvol-109-disk-0 zp1/backup/subvol-110-disk-0 10.5G 64.6G 10.4G /zp1/backup/subvol-110-disk-0 zp1/backup/subvol-111-disk-0 1.36G 64.6G 1.35G /zp1/backup/subvol-111-disk-0 zp1/backup/subvol-112-disk-0 645M 64.6G 643M /zp1/backup/subvol-112-disk-0 zp1/backup/subvol-113-disk-0 6.22G 64.6G 6.22G /zp1/backup/subvol-113-disk-0 zp1/backup/subvol-114-disk-0 795M 64.6G 794M /zp1/backup/subvol-114-disk-0 zp1/backup/vm-102-disk-0 696M 64.6G 684M - zp1/backup/vm-108-disk-0 3.86G 64.6G 3.85G - che complica ulteriormente le cose, dando per usato un 36.8 GB... -- Marco Bertorello https://www.marcobertorello.it
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